Seal



H. PlTTLlCK Jan. 5, 1932.

SEAL

v Filed Dec. 27, 1928 leakage. It is an object of my invention to remedy p surfaces to form double cones superpose vsealing lines, edgesor Patented Jan. 5, 1932 s y y 1,839,340

j UNITED STATESYPATENT oFFilcEf HERMANN PITTLIGK, OF SODING-EN, GERMANY, ASVSIG-NOR TIO THE FIRM IATENT- VVllRWER'JIU'NGE A. G. ALPINA S. A. POUR LEXPLOITATION DE BREVETS ALPINA PATENTS EXPLOITATION CY. YALPINA'LTD., OF BASEL, SWITZERLAND smi.,

Application led December 27, 1928, Serial No. 328,834, and in Germany February 2, 1927.

vclosures or valves are required to ensure an absolutely perfect and eiiicient sealing. The 7 covers lor valves as hitherto designed areas a rule formed .with conical cooperating sur-v faces which are Vhowever known to be frequently worn out very soon so as to require being turned lor reground in order to avoid this defect and with this object in view I provide a separate packing means of annular shape intermediate between the twoA cooperating surfaces and I impart to these surfaces a configuration such that they constitute two parallel annular sealing lines of projecting rotation bodies. I preferably shape these form in the planes where the two cones'intersect the circular edges or lines mentioned' above. I-Iowever, the cooperating surfaces need not be conical, the invention also comprising any other suitable formation or configuration thereofprovided that it provides projecting circular contacting lines, edges or ridges for engagement with the'two faces of Ythe sealing member to be inserted therebetween. Y

Obviously it is not necessary either that the annular contacting lines or ledges beabsolutely sharp.V They may be blunt or obtuse so .as to form annular faces for the sealing contact, but it will always be preferable to keep these faces as narrow as possible,their width depending `chiefly upon the hardness of. the material employed..V v

In case that the `cross-sectional area of the parts haveA aV polygonal configuration, the faces will conform the great' majority of cases thereto but as .in

the cooperating sealing members will, for

practical manufacturing reasons, beformed with circular or conical surfaces, the invention will be described particularly with ref- Y erence to circular-cooperating edges or lines.

I have further found that alparticula'rly redtol liable and eflicient seal will be obtained if the two cooperating circular or annular edges or faces are not located exactly opposite each other with the sealing member or ring between them but are displaced relative to eachk other. In this case the'annular sealing niem- ,ber willV be resilient land will act to reduce the required preliminary pressure. The usefulness of displacing the two cooperating circular edges or faces with relation to each other, will depend upon the sealing member or ring remaining unaltered in maintaining its position with regard to the outer rotation body or ycone or in'respect to the inner `rotation ,body or cone.

In some `cases it will be advisable touse a sealing member ywhich is integral with `or forms part of a vessel adapted to be inserted in the container or conduit to be closed, vand several such'vessels may be employedin con# centric arrangement,l in which case the uppery part of the vessels forms the sealing ring, properly speaking, or a rotation bodywith an annular projecting edge, or face on Veither side so as to constitute a double cone in crosssection. j a

In the drawings aixed'to this specification and forming part thereof, several embodiments of my invention are illustrated diagrainmatically by way of example as applied to va cylindrical-vessel or Vco-ntainer and the cover thereof. In the case of valves the valve seat and the valve .body or disk will take the place of the top' of the vessel and thecover thereof, respectively. VIn the drawings is a sectional'view, partly in eleva- Fig. 1

wherein the edges of tion, of an embodiment the sealing parts are sharp and disposed'vexactly opposite each other,

Fig. 2 is 'a similar view ofan embodiment with the sealing edges displaced, the edge of the vessel lying in a horizontal. plane a little above the horizontal plane of the sealing edge of the cover,

Fig. 3 is a having rounded convex sealing edges, vthe circular sealingline of the container V.lying below the sealing line of the. cover,

Fig. 4 is a similar view' showing a form with sharp sealing edges, the edge of:v the similar view of an embodiment( container being disposed below the sealing edge of the cover and the sealing ring constituting the top of a second container adapted to be inserted into the first one,

Fig. 5 shows another forni inA which th sealing edges of the container and the cover are shaped to form narrow annular faces, the narrow sealing face of the cover lving above theA` corresponding face of tlieicontainer, and lFigJ-Gris asectionaliview ofan embodiment including` three inserts or containers,rtwo of which are shaped atthe top to form sealing rings, while the third one located between the two other ones is shaped to forni atthe top an annular projecting edge on either side thereof. l U :Referring first to -F ig. l, the upper end of the container or vessel a; is shaped, by turning or in any other appropriate way, to Eform a Haring orifice composed of two conical surfaces b, the one above or in continuation of the other one, so that an angular', annular l.edge or ridge ois produced in the intersecting plane of the two conical surfaces. Ylhe valvularprojection of the lid or cover CZ of the vessel is likewise shaped to form two conical surfaces `with a ro'ecting annular edge or ridge g in the plane of intersection. Prior to assembling the parts a and (Z a preferably conical sealing ringe is inserted'therebetween `as shown, the` two cooperating edges orK ridges c and g contacting with the inner and outer surfaces of theringin exact opposition. c

.The modification shown in-Fig. 2 is in gen- .eral similar to the one described with refer-- ence to Fig. l.

The flaring orifice vofthe vesselcomprises two adjacent conical surfaces fi forming an annular edge or ridge c andthe valvular projection o-f the cover l is likewise. provided with two conical surfaces f constituting an annular er1 ge or ridge g, but the sealing edge c is situated little abovefthe `intruding edge The sealing ring c is initerposed between the'two edges.

In the modification shown invFig. 3 the -mating surfaces rand it of the. vessel'and the cover,Vv respectively, are rounded and do-not- L.for-m a sha-rp edgeor ridge. The-annular sealing lines are variable in accordance with `the positionthe 'sealing ring e occupies be- `tween the .two cooperating surfaces z' and' 7L. lIn some cases the. sealing'line @of the rounded surface z of thevessel will be directly opaposite thefsealing line g of the rounded surface-of the cover, iniother cases ity may be locatedv cit-her above or below .the sealing 'line g. .The latter alternative is shown in Fig. 3.

Obviously the inventionv is also applicable in cases where the sealing member br ring formsv a part of'an insert or container ada-nted to be inserted into the vessel or the like,

sasshown in Fig. 4;, or where two or more inserts areto be telescopically asseinbledand a part of an insert.

accommodated `as a unit in a Vessel or apparatus, as illustrated in Fig. 6.

In F ig. 4 l have shown an embodiment similar to the construction illustrated in Fig. 2 and provided witha sealing ring forming The vessel t has sealing surfaces Z) and the cover CZ has a sealing 'surface ,'f, as shown in Fig. 2. The sealing edges or ridges o and glare aliketo those shown in Fig. 2, however the sealing .edge c'liesla little below the sealing edge g. Generally speaking, these mutual positions of the sealing edges are preferable. As will be seen in Fig. fl, the sealing ring e forms the top of a containerc which is inserted in the vessel a.

ln the .modification shown inFig. 5 both the sealing surfaces of the vessel a` and those of the cover d are shaped to form angular edges. ln this case the sealing Contact between the orifice of the vessel and the sealing ring, on the one hand, and the cover and the sealingl ring, on the other hand, is not effected in a circular line, as in the embodiments shown in Figs. l to 4, but occupies narrow annular surfaces, the contacting'or sealing surface of the cover being marked n, 0 and that of the'vessel Z, m. In Fig. 5 thenarrow contacting surface Z, m of the vessel lies a little below the contacting surface n, 0,- that is to-say, a little farther within the orifice of the vessel. Y

l `In Fig. 6 the orifice of the vessel a is shaped to form two adjacent conical surfaces b constituting a sharp sealing edge or ridge 0, and .similarly the projecting part of the cover al is provided with two annular intersecting surfacesff constituting a sharp sealing edge or ridge g. Three inserts are accommodated in the vessel, the innermost insert 7c having a flaring top forming a sealing ring e and the outermost insert p being similarly shaped to form, at-tlie top thereof, a sealing ring 1, while thethird insert g disposed between the two inserts'lc and p is shaped atthe top to provide `twoinner intersecting conical surfaces constituting a sealing edge or ridge t opposite the edge g of the cover, and two outer intersecting conical surfaces constituting a sealing edge or ridge c. It will be seen that the sealin g efectis accomplished in this modification, taken singly, in the very same manner as described with reference toFigs. 1,2 or 4.

If it is desired or preferred not to use an intermediate container such as g, the depending part thereof which forms the container properly speaking, may be dispensed with, while the upper part forming an annular sealing member or ring will be useful for the sealing purpose as above described.

Vll of the several embodiments shown and described herein are adapted for use in connection with both vacuum apparatus and compression apparatus, but they are particullarly suited for sealing apparatus in which 130' Cil very high pressures are employed, and they are particularly efficient and advantageous in connection with apparatus in which the sealing members are frequently disengaged and reconnected such as in valves and the like.

In the claims the term edge is meant to include blunt and rounded faces.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art. Y y

In the claims afliXed to this specification no selection of any particular modification of the invention is intended to the exclusion ofl other modifications thereof and the right to subsequently make claim to any modification not covered by these claims is expressly reserved.

I claim 1. Seal comprising a body with a funnelshaped opening to be sealed and a conical closing body cooperating therewith to seal same,

' projecting annular edges being formed on adjoining faces of the cooperating parts, the said edges being parallelly related to each other, and a sealing member inserted between the cooperating parts to be engaged by bothv said edges.

2. Seal comprising a body with a funnelshaped opening to be sealed and a conical closing body cooperating therewith to seal same, projecting annular edges being'formed on adjoining faces of the cooperating parts, the said edges being disposed in the same plane and parallelly related to each other, and a sealing member inserted between the cooperating parts to be engaged by both said edges.

3. Seal comprising a body with a funnelshaped opening to be sealed and a conical closing body cooperating therewith to seal same, projecting annular edges being formed on adjoining faces of the cooperating parts,

the said edges being disposed in different planes parallelly related to each other, and a funnel-shaped sealing member insertedrbetween the cooperating parts to be engaged by both said edges.v

4. Seal comprising a body with a funnelshaped opening to be sealedand a conical closingV body cooperating therewith to seal same, a projecting annular edge being formed on each of the cooperating parts, the said edges being parallelly related to each other, and a funnelshaped sealingmember inserted between the cooperating parts to be engaged by both said edges. V

5. Seal comprising a body with arfunneland a sealing member inserted between the cooperating parts to be engaged by both said` edges, said sealing member havingthe form of a container, the funnel-shaped top part of which is engaged by the cooperating edges.

6. Seal comprising a body with a funnelvshaped opening to be sealed and a conical closing body cooperating therewith to seal same, a projecting annular edge being formed on .each of the cooperating parts, the said edges being parallelly related to each other, and a funnel-shaped sealing member inserted between the cooperating parts to be engaged by both said edges,said sealing memv ber being also formed with a projecting annular edge. Y

7. Seal comprising a body with a funnelshaped opening to be sealed'and a conical closing body` cooperating therewith to seal same, a projecting annular edge being formed on each of the cooperating parts, the said Vshaped opening to be sealed anda conical' closing body cooperating therewith to seal same, a projecting annular edge being formed onl each of the cooperating parts by two intersecting conical surfaces, the said edges being parallelly related to each other, and a funnel-shaped sealing member inserted between the cooperatingparts to be engaged by both said edges.

In testimony whereof I affix my signature.

' HERMANN PITTLICK.

shaped opening to be sealed and a conical closing body cooperating therewith to seal same, a projecting annular edge beingformed on eachof the cooperating parts, the said edges being parallelly related to each other, 

